FIELD: electronic engineering. SUBSTANCE: device has the first terminal unit for receiving input signal containing the first component of scrambled signal and the second component of scrambled signal, the second terminal unit for sending output signal, signal processor for processing the first component of the scrambled signal for building the first unscrambled signal. The signal processor responds to the mentioned first unscrambled signal for processing the second component of the scrambled signal for building the. The device has means for combining the mentioned first component of the scrambled signal, the mentioned input signal and the mentioned second unscrambled signal for building the mentioned output signal. EFFECT: high reliability of control system. 16 cl, 9 dwg
